Think the differences were...
standard fogs/
had traction control,
air con,
different vr6 badges (slightly smaller rectangle ones)
15" bbs solitudes like the gti colour concept instead of normal vr6 cross spoke ones.
They had a wooden gearknob.
They were in black metallic or that mullberry colour (matching leather) (heated probably) (and carpets? ,...i dont know)?
I dont know it there were any other differences...?
I could have missed out loads.
But Probably my age but my insurance company wanted £50 more a year for a highline than a normal vr6, same year/ same value etc.... same group though i think.
think they ran from April 1995 for a bit.